Beginners Guide to Home and Limit Switch Hardware - Mach3 CNC
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- Опубліковано 26 лип 2024
- Setting up Home and Limit switch hardware on a CNC machine can offer many great benefits when operating an automated tool. This video will focus on the physical switches themselves, such as the type and style that is best to use as well as the proper placement of the switches on the machine2 moving axis's. The Mach3 cam program is referenced as the controlling software in this lessons example because it is one of the most popular CNC controlling applications used today. Another future video will be published soon as a companion lesson, that will cover the software side of control using Mach3.
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It's 2020 I just got a 6040 from ebay for 1k , Your videos are still helping to educate us noobs. THANK YOU!
its 2024 and still educated me, ty sir
Meanwhile I have to declare that I feel so comfortable when I am listening to you, it sounds like I am listening to a native speaker, so calm and understand able. It is geat
Wow, thank you
Thanks so much. Too often so called experts attempt to pero something quite complex. Most often they dont speak clearly, zoom the camera all over the place, or just click through screen shots. Your approach is so good. Everything is so clear and well explained. Just finishing a home made 48" x 48" router-plasma-laser and what ever. Wish i had viewed this prior to ordering proximity switchs.
I'm a new bee at CNC. Finaly a teacher I understand. From this lesson I understand what limit switches do. Would you do a video on how to wire up a limit switch. Your calm persona I can identify with. I'm also an old dude and CNC is going to be a huge learning curve for me. So far, I'm amazed that I'm able to retain as much as I have.
Thank you very much , Your video is easy to understand , I searched more than 10 videos before watching your video ,And this is what I need to find
Great video. I had a lot of confusion about how these worked, but after this video, they seem so simple. Very well done sir!
Thanks Steve for a detailed but unstandardable explanation without all the jargon
Super helpful in teaching me about limit switches! Clear, concise, and helpful presentation.
I don't know what kind of witch trick you played but I had to "like" your video....(great explanation by the way)
Thanks for a great explanation! I haven't got my machine yet so I am learning while I am waiting :)
Thanks for the info Steve, I can't wait for the next video on how to set up limits and home switches in Mach3!!
I think he sets up his limits and home switches in his video about making his stepper controller box.
Very comphrensive and easy to understand, you solved many problems of mine
Appreciate so much
Execellent presentation!
Great video on limit and home switches
Thanks for a very professional and concise video.
That was a well done video for us noobs. Thanks! Good sound quality. Old guys like that.
Love your vids Steve - you have a good manner of teaching
Thank you very much!
Steve I have only recently come across you and your videos and I have to give you feedback, no not just normal feedback but super positive feedback. I have watched a lot of videos on here and I put them into 3 types and they are stupid, boring or informative and what I have seen so far you fall into the informative. So Steve I'm off to watch more and yes I have given this a thumbs up along with subscribed to your channel.
Thank you very much Rodger, I hope I don't disappoint. Thanks for watching and commenting. It all helps
Very informative! Thanks for the effort!
Excellent video
Great explanation!! Thank you very much for a clear, concise video.
thank you
@@GuruBrew I need your WhatsApp number
GREAT VIDEOS VERY HELPFUL JUST STARTED TO MAKE A PLASMA TABLE THE SETUP IS SOMETHING THAT WORRYS ME A BIT ?? SO FAR SO GOOD THANKS AGAIN STEVE FROM UK
One of the best explanations
Very useful video. Thanks.
Great video, great explanation 👍learned something new today. Ohhhhhhhh yeahhhhhhhh
Well explained!
Thanks!!!! Good teacher!!!
SUPER INFORMATIVE!!!! THANKS
Basically total noob here, I got some machine things happening where it costs me money in mistakes and also my own in-experience that costs me money. When the machine starts a cut path above a sacrificial slat, this actually effects the hypertherm and I did read from Jim Colt, that this is a common problem with the Hypertherm 45XP. So after it stops / has an an "E-Stop" error, this can throw the machines coordinates out as the E-Stop is reset, as the magnets in the stepper motors re-power and move to their natural position, ready to start moving again after I command it to start again. This exact same thing happens every time the machine has a fault light / E-Stop, which is the biggest cost to my operations so far. So as you can imagine, the E-Stop / Faults in my cnc plasma are very frustrating and I'm now trying to rid the machine of what ever faults I can. Another issue I have is when the machine moves from one cut path to another, I'm sure these movements are called "Rapids". So If I'm cutting out a car picture, imagine the machine has cut out all the interior cuts like the wheels, the windows etc, then it moves the Z up and moves over to start cutting the outline / body of the car, it will fault on that movement when in the middle of the transition from one path to another. This throws out where the machine thinks it is, so as I tell it to start that next cut, it may be off by about 12mm on the X and Y, this will start that next cut from a position that is totally wrong and the design of the car is totally off. Really costs me money, very frustrating. So I guess your homing and limits switches would help me here in zeroing the machine again, but it's still probably hard to do when it's not starting a fresh cut on a new plate. I need to slow down my rapids, then maybe upgrade the machine to have these limit switches, as I only have one on my Z Axis.
Thank you!
thank you so much...good video
Hi. Great vid - Could you tell me what would cause the homing switches to be activated twice on all 3 axes when homing the cnc. I've got a parallel config. As they also are used for limit switches, they work perfectly. Thanks in advance
it helps thanks for the information,
thank you very much,
Thank you
Good night, I installed a playstation control in my Mach3 and I'm wanting to add a command but I can not be the (reverse run ) and working with sheet metal cutting with massarico sometimes the cut is interrupted and could program the reverse rum in control would help me a lot .... Thanks for listening ..
Some questions....
Are limit switch also a homing switch too? Since arduino cnc shield don't have pins for homing it has only limit switch pins and if it's separate switch, how many it needed or just homing switch installed on z axises and it also installed both sides? Like z+ z-?
Thanks for a great video! Sorry if I missed something but if you happens to run into an endstop, how do you get away from it? Mach 3 just tells me that an endstop is hit. Thnaks!
I have a question about machining. I import a picture and setup the rough and finish cut. start the rough cut program and it will take about 6 passes to do it . it will cut say 4 passes great then when it goes to start to cut the next pass it will plunge deep into the material. but when I preview the toolpaths everything looks fine .I am setting it up to take fifty thousaths off at a time in the rough cut. Can you give me any idea why it does this. I am using a china cnc machaine 3040 and Mach3 with Aspire Vetric . Any help would be greatly appreciated.
hey Steve, is the next part online? i could not find it in your channel? thanks for the video :)
Great video..thanks a lot.. i have a quesiton about limit switches what you mentioned microswitch wich bupming. i see many people dont use any limit switches phisically they use mach3 config settings there is programming limit switches they mentioned for example from 0 to 200 mm that's all and during out of this limit machine stops itself without phyisically switches how it wokrs fine or needs to put switches ???
This is a very confusing subject for a newbie. When one also considers setting center for a job, it adds to the brew.
The work here is developmental in nature and currently am working on a prototype that is actually @ 5x8 inches . Since there are
varying depths with varying bits and 12 separate parts to make up the entire 5x8 prototype, I am having to make test cuts.
So, I placed a level board that is @ 12 x 24 inches. With this there is plenty of room to make test cuts of the various sections
before making the actual cuts in the 5x8 piece.
Where it gets wierd here is that a message comes up that insists I am out of limits when there is ample room all around where am setting up
either the test cuts or placing cuts into the prototype piece.
Win PCNC is being used here.
I usually set a centering point (XYZ coordinates) for the area of the base material/board I am doing the work on in winpcnc and the
coordinates get saved. The actual file is brought in and the centers line up.
There are times here where the machine seems to refuse to hold coordinates and or I get messages saying am out of limits.
There are magnet limiting switches and I would like to know if I can set up some coordinates so the out of limit warning
doesn't come up?
I got this machine some 8 years ago and have had to teach myself everything. Win PCNC isn't popular in America.
The tutorials, although recently more plentiful, are in mostly other languages...German, Hispanic, Polish,...
I’m adding home and limit switches to my CNC and need to understand the procedure.
I have two switches on Y Home and Y- - and one switch on Y + +.
After setting steps per inch and squaring the CNC.
Bothe the Y home and Y - - be made at the same time, Correct? Or just close?
I have a positive stop at the end of the travel of all axis.
I understand the travel (when homing) will slow and contact the positive stop then back off a little. Which location is home, the positive stop, or the location that it backs off to?
How do you set the point that it will slow down, and how do you set how much it backs off?
MACHINE COORDINATES, in Y axis in zero at the front of the CNC, and 36” at the rear of Y travel, if you have 36” Y travel. Where and how do you enter the zero and the 36”?
I’ve use my DIY CNC for 12 years and never had a problem with setting XY Z zero, but I want to use the exact positioning of the axis especially with tool changes so as to have the different bits register as accurately as possible.
Sorry for asking so many questions, I really do enjoy your YT videos, very straight forward, without getting sidetracked , thanks so much .
We have an "A" motor slaved to the "Y", and a limit switch mounted on the "Y" side. When we reference all home, the "Y" side will move to the home position. But the "A" wont move. When I trick Mach3, and tell it that the "A" motor has a limit, it moves along with the "Y". But it keeps wanting to move, until it finds that limit (which is not there). Do I need another limit on the "A" side? Or is there another setting in the program?
how many volts and amps would my power supply need to be for 4 nema 17 motors rated at 2.4v and 1.5 amps per phase? i am using drv8825 drivers with a cnc shield.
Why my DIY cnc stops and ask to reset and unlock after triggering opto coupled limit switch i thought during homing gantry might go from one direction to other to detract the maximum but it instantly stop when any of switch press? Help me i am using gbrl cnc shield and using only end switch.
Hi Steve, thx for the xplanation on the switches, im pretty new at this CNC, and got my machine build, but im confused whit the limit switches in Mach 3. when the machine hit the switch, it stop as intended, but how can i move back from the limit again? do i really have to go into mach 3 settings and tick of settings, to make it move again?..thx for help
Ive got the same question. Did You find a soluotion?
If I only put limit switches on the (2) X-axis and I press the button "REF ALL HOME" in Mach 3, will it ignore the Y and Z-Axis and just go till it triggers the x-axis limits?
Steve, great video. Would you mind doing a video on using jigs and offsets in the future? Thanks, Terry
sure, I can give some feedback of my experiences using jigs with offset presets
+GuruBrew Awesome. Looking forward to it. Your videos helped me set up my CNC last year and I've learned a a lot since then. Thanks again for your time!
Is it possible to have a wire drawing of the whole setup of the limit switch
and how about the stepper motor with encoder... if i say in g code x 10 inches and by mistakely x axis can pass away form 10 inches ? as i heard the encoder disconnected stepper motor because it got info and can't pass more step as we mantioned in gcode am right or encoder also no hleps here ??? i never try but just question
great work,would you help me by explain how to connect limit switches,end point with GRBL shield V3 ,thank you sir.
Great explanation. But what to do when my machine stops and say (2)Homing Cycle Failed. (1) Limit Switch (3) GRBL Error Pull Off didn't clear (4) GRBL Serial Port Resource Error ????? HELP, thanks.
Hi Steve
I'm an absolute beginner with mach3 . Whatever I do , I haven't got an output signal and the pulse frequency on simulate seems inactive.
i tried everything I could I watched a bunch of videos with no success.
if you have any idea that would be a huge help
It would be nice if the limit switch would kill power to the motor directly, without relying on software that may hang after switching the motor on :-). Of course this has to be done in a way that still allows the motor to run in the opposite direction in order to get out of the situation. For DC motors driven by an H-bridge I think this is possible by routing the control signals through the limit switch, but I still have to test if that actually works.
Very new and somewhat confused, I get the purpose of limit switches, but why wouldn't this be handled by the control software? it knows the position of the spindle and if it knows your table parameters, wouldn't it stop the job if it goes beyond the setup limits?
"Normally Closed" switches are also better not only for electrical malfunction fail-safe but because if you add a small Capacitor like a (4.7uF 25V) it eliminates "FALSE TRIGGERS"..
Dear sir, I am facing big problem with my Mach3 cnc machine. Here, we face frequent electricity cut off problem. Sometime when electricity cut off, all the X, Y, and Z value in mac3 are changing when restart the machine again. Can not start from the same point where it stopped to work. It wast my expensive wood. I want to start from the same point where it stopped.
Is there any solution to solve the problem? Please could you help me to solve the problem?
Hi. I don't have a printer. Do you sell the limit switch holders?
Great video. I have an application for the red limit switch (reed?) you use in your video. Can you post a link of where you get those? or tell me the manufacturer and part number? Thanks!
I think it was from SmartFun used in coin mechanisms, hence its long probe wire.
hello sir, can you makea tutorial on how to connect the limit switches to tb6560 3axis board
Dear Guru,
In my homing processing (using Mach3) its only 2 axis working (y and z), X Axis it does not working, X axis position before homing process was at not zero pisition, What happent ?
Edward Snowden of the CNC world .
Is it possible to show us microstep TB6600 driver Arduino connection with the drivers by the three motors with endstop buttons with relay to stop and run the drill please showing this in video or photo please ? cnc machine
Ste can you help mate, I have Mach3 set up on my milling machine but just set up a lathe and want to know how to set up mach3 turn on that, I have the licence but want a stand alone system one for milling and one for the lathe any help would be good
Hi Dave, I don't have a lathe but it's not much different then setting up a mill. Anything in particular you want to learn to do or just overall setup. Steve
@@GuruBrew yes I have the licence for the soft wear on the computer for the mill and I have just bought another computer to run my lathe
just need to know how to copy from one lathe to another I have internet set up when the mill was set up they did it over the internet
so its just setting up on the other computer
This is a common thing. This post says it best www.machsupport.com/forum/index.php?topic=15789.0
Good luck,
Steve
Hello , Just hooked up my china cnc router. Was working but now when I reset both ref and mach cords to zero and push goto zero the z runs up till it crashes. Any advice
Check the settings in motor home / soft limits settings it may be off or the wrong number put in
I wish someone would post a video on powering up Home Switches correctly. I am using the Gecko G540 with a UCCNC 100 USB Interface and Proximity Sensors that are wired Normally Closed. However when I wire them Up I am required to run a seperate power supply to power the switches. I am using a Wall Wart to supply the power and everything is grounded through my 48V Power Supply. They'll work perfectly as long as my E-Stop Switch is Engaged, however when I Open the E-Stop Switch they refuse to work as described. I haven't found anyone who can explain how to correct this.
Provided the switches are wired correctly I feel it may be the setup you are using in mach. Have you monitored the home pins while the estop is depressed and pressed. How about changing the ports and pin configuration for the home to the opposite of what it is now, such as active high.
Well
what if i only have 3 limit switches?
Sir I tried but when m pressing the limit switch , the motor stopped working but after that it's not taking any further feed, in short it's blocking the machine. .
Hello This is Vikash, you are still doing CNC stuff..?
Muzhe kuch Help chaheye tha.. Please
Hey steve, do you want me to design you a nice intro ?
how to conect +Z -Z, +Y -Y , +X -X
is he still alive?
where is he?
Thanks for the info. However, if any viewer wants to save 4 minutes of their life, set the video speed to 1.5x
Some like it slow 😊 Good information, so thank you